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145 lines
3.6 KiB
C++
145 lines
3.6 KiB
C++
//
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// Getter.h
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//
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// $Id: //poco/Main/WebWidgets/include/Poco/WebWidgets/Getter.h#2 $
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//
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// Library: WebWidgets
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// Package: Core
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// Module: Getter
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//
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// Definition of the Getter class.
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//
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// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef WebWidgets_Getter_INCLUDED
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#define WebWidgets_Getter_INCLUDED
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#include "Poco/WebWidgets/WebWidgets.h"
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#include "Poco/RefCountedObject.h"
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#include "Poco/AutoPtr.h"
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#include "Poco/Any.h"
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#include "Poco/MetaProgramming.h"
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namespace Poco {
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namespace WebWidgets {
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class WebWidgets_API Getter: public Poco::RefCountedObject
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{
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public:
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typedef Poco::AutoPtr<Getter> Ptr;
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public:
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Getter()
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{
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}
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virtual Poco::Any get() const = 0;
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};
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template <class TObj, class TArg>
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class GetterImpl: public Getter
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{
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public:
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typedef TArg (TObj::*NotifyMethod)() const;
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GetterImpl(TObj* obj, NotifyMethod method):
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_object(obj),
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_method(method)
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{
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}
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TArg operator()() const
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{
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return (_object->*_method)();
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}
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Poco::Any get() const
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{
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return this->operator();
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}
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protected:
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TObj* _object;
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NotifyMethod _method;
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};
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template <class TObj, class TArg, class TArgIn>
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class GetterImpl2: public Getter
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{
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public:
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typedef TArg (TObj::*NotifyMethod)(TArgIn) const;
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typedef typename TypeWrapper<TArgIn>::TYPE TArgInValue;
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GetterImpl2(TObj* obj, NotifyMethod method, TArgIn in):
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_object(obj),
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_method(method),
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_value(in)
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{
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}
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TArg operator()() const
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{
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return (_object->*_method)(_value);
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}
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Poco::Any get() const
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{
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return this->operator();
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}
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protected:
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TObj* _object;
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NotifyMethod _method;
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TArgInValue _value;
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};
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template <class TObj, class TArg, class TArgIn>
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Getter* getter(const TObj* object, TArg (TObj::*method)(TArgIn) const, TArgIn in )
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/// "Constructor" function for a Getter.
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{
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return new GetterImpl2<TObj, TArg, TArgIn>(object, method, in);
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}
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template <class TObj, class TArg>
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Getter* getter(const TObj* object, TArg (TObj::*method)() const)
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/// "Constructor" function for a Getter.
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{
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return new GetterImpl<TObj, TArg>(object, method);
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}
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} } // namespace Poco::WebWidgets
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#endif // WebWidgets_Getter_INCLUDED
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